''Dolichoderus antiquus'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

species of

ant Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from vespoid wasp ancestors in the Cretaceous period. More than 13,800 of an estimated total of 22 ...

in the genus ''

Dolichoderus ''Dolichoderus'' is a genus of ants found worldwide. Taxonomy The ants of the Neotropical genus ''Monacis'' were revised in 1959 by Kempf. However, Brown in 1973 and G. C. Wheeler and J. Wheeler in 1973 and 1976 considered both ''Monacis'' and ' ...

''. Described by Carpenter in 1930, the

fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...

of this species are only exclusive to the

Florissant Formation The Florissant Formation is a sedimentary geologic formation outcropping around Florissant, Teller County, Colorado. The formation is noted for the abundant and exceptionally preserved insect and plant fossils that are found in the mudstones and ...

.Carpenter, F. M. 1930. The fossil ants of North America. ''Bull. Mus. Comp. Zool''. 70: 1-66 (page 39, pl. 4, fig. 6; pl. 9, fig. 1; pl. 10, fig. 2 worker, queen described '
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'')

References

† Fossil taxa described in 1930 † Fossil ant taxa Florissant Formation {{Dolichoderus-stub